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#1
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I Cant Shut Down !
Hi there.
Yesterday i opened the case of my pc to do some dust removal. I used a clean brush for this purpose, whipping away dust from the motherboard. After i reinstalled what i had taken out, following Problem occured: I startet Windows, did some work and when i wanted to power off the pc (with Windows-Shut down ), the pc would power down, but imediately after the fans stop rotating the system would power on again !. So i went and disconnected every component from the motherboard but the CPU and the PSU ( eben the RAM), but the problem persisted. I used another PSU from a friend, connected it to the motherboard: still the same Problem. Has anybody a hint, why the system still wont power down ? Asus A7v333 AthlonXP 1900+ 350W PSU Jonas |
#2
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Jonas Dieckelmann wrote:
Has anybody a hint, why the system still wont power down ? I know this maybe isn't the answer you're looking to, but you can ALWAYS shut down your PC by flipping the power switch on the PSU to off. |
#3
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Ive dealt with motherboards that have been shorted out on one of their
mounts before which causes similar behaviour. Try removing everything from case and running out of the box to see if that solves problem. "Cyde Weys" wrote in message ... Jonas Dieckelmann wrote: Has anybody a hint, why the system still wont power down ? I know this maybe isn't the answer you're looking to, but you can ALWAYS shut down your PC by flipping the power switch on the PSU to off. |
#4
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mikhail wrote:
Ive dealt with motherboards that have been shorted out on one of their mounts before which causes similar behaviour. Try removing everything from case and running out of the box to see if that solves problem. Also, check the stand-offs between the mobo and the case. I accidentally messed that up once and was having some seriously wacky problems (luckily nothing permanent, and after realizing what I had done, I fixed it and the mobo now works fine). |
#5
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Jonas Dieckelmann wrote in message ...
Hi there. Yesterday i opened the case of my pc to do some dust removal. I used a clean brush for this purpose, whipping away dust from the motherboard. After i reinstalled what i had taken out, following Problem occured: I startet Windows, did some work and when i wanted to power off the pc (with Windows-Shut down ), the pc would power down, but imediately after the fans stop rotating the system would power on again !. So i went and disconnected every component from the motherboard but the CPU and the PSU ( eben the RAM), but the problem persisted. I used another PSU from a friend, connected it to the motherboard: still the same Problem. Has anybody a hint, why the system still wont power down ? Asus A7v333 AthlonXP 1900+ 350W PSU Jonas Get your MB manaul out and look at the jumper settings. You may have hit or knocked a jumper when you were cleaning it. That is the only thing that I can think of. -Jay |
#6
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"Cyde Weys" said in :
mikhail wrote: Ive dealt with motherboards that have been shorted out on one of their mounts before which causes similar behaviour. Try removing everything from case and running out of the box to see if that solves problem. Also, check the stand-offs between the mobo and the case. I accidentally messed that up once and was having some seriously wacky problems (luckily nothing permanent, and after realizing what I had done, I fixed it and the mobo now works fine). While plastic standoffs may be available, often metal ones are used. The pad around the hole in the motherboard has solder (to make it soft) onto which the metal mount is actually expected to short against so the mobo gets grounded at that point to the case. It would've had to been a very fat metal mounting stud to extend beyond the pad or hole which should have its foils for circuit paths far enough away to accommodate the metal mounting stud. Maybe you used a mounting stud in a hole that wasn't supposed to be used for mounting the motherboard. -- __________________________________________________ __________ *** Post replies to newsgroup. E-mail is not accepted. *** __________________________________________________ __________ |
#7
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"Trent©" said in :
On Wed, 11 Feb 2004 14:33:31 +0100, Jonas Dieckelmann wrote: Hi there. Yesterday i opened the case of my pc to do some dust removal. Also... Were you having a problem before this? People don't usually dust the inside of their computer. Have a nice week... Trent Follow Joan Rivers' example --- get pre-embalmed! Dusting is mandatory to reduce heat. Dust reduces heat flow so anything that heats up on which dust has collected will run hotter. It can also generate static (there's a name for this type of static that builds up slowly over time but I forget it at the moment). It will also reduce airflow if it is allowed to accumulate across openings or accumulates to large enough mass. So there is very good reason to yearly blow the dust out of your box. That also includes blowing out the power supply, its fans, and all other fans and crevices. -- __________________________________________________ __________ *** Post replies to newsgroup. E-mail is not accepted. *** __________________________________________________ __________ |
#8
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"Jonas Dieckelmann" said in :
Hi there. Yesterday i opened the case of my pc to do some dust removal. I used a clean brush for this purpose, whipping away dust from the motherboard. After i reinstalled what i had taken out, following Problem occured: I startet Windows, did some work and when i wanted to power off the pc (with Windows-Shut down ), the pc would power down, but imediately after the fans stop rotating the system would power on again !. So i went and disconnected every component from the motherboard but the CPU and the PSU ( eben the RAM), but the problem persisted. I used another PSU from a friend, connected it to the motherboard: still the same Problem. Has anybody a hint, why the system still wont power down ? Asus A7v333 AthlonXP 1900+ 350W PSU Jonas Did you use an anti-static brush? If not, or if you did not take appropriate anti-static precautions when reaching inside the box or handling its components, then you could've zapped it. In the hope that you didn't zap it silly, maybe the CMOS table got corrupted. I have seen where the CMOS copy of the BIOS is out of sync with the BIOS. Look for a 2-pin header on the motherboard where you short a jumper across to clear the CMOS. First yank the power cord from the power supply, then short the header for 10 seconds, then remove the jumper and power up. If you don't have a CMOS clear header that you can jumper, pull the CMOS battery out (after first yanking the power supply cord), wait a minute or two, replace it, and then power up. When the POST completes and you see the prompt on how to go into BIOS, enter BIOS and save all settings (to CMOS). You'll also have to redo any BIOS customizations you had made previously. -- __________________________________________________ __________ *** Post replies to newsgroup. E-mail is not accepted. *** __________________________________________________ __________ |
#9
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"Trent©" said in :
I guess I've gotta start to RTFM! lol Why annually? What if there's a dust build-up before that? Do some mainboards come with a dust measuring device?...to measure the depth of the dust? I've got a few clients that can hardly find the 'on' button. I guess I'll hafta number the screws in the back...so's they know which ones to take out first. And where to I get all of them one of those anti-static brushes you talk about? I can really use the money...but I don't think I wanna tell my clients to pull the cover off once a year and dust inside!! ROTFLMAO!!! Have a nice week... Trent Follow Joan Rivers' example --- get pre-embalmed! Your environment will tell you how often to dust. If dusty, you set the computer atop a carpeted floor, lots of pets, leave windows open in summer instead of using A/C, etc., then your environment is more dusty or linty. Some computers have filter screens on their inlet air ports (but they are rather porous). Yearly dusting is recommended just because it does get the dust out occasionally and you're usually not going to get IS or users to do it more often. If you take an A+ course for computers or do any maintenance in a computer environment, you know that you have to schedule some dusting. In a carpeted house with lots of traffic and pets, I dust mine about every 6 months. One time my 2kVA UPS was making a lot of noise. I figured its fan was bad. Nope, the fan was horizontal and blowing air over some huge heatsink fins and a column of dust had accumulate atop the fan between the fins. I had to use a vacuum with a crevice tool. You know there was a lot of dust when the vacuum hose when thunka-thunka when sucking up more dust. However, I would not use a brush unless it was an anti-static brush to wipe off cards and the motherboard unless I had taken the system apart and took precautions against static. Blowing with compressed air is usually sufficient. Otherwise, those mini dusting vacuums (designed for computer use so they don't build up static from their motor) are handy. You might want to blow the dust off in a small room where you can then clean up the mess afterward, or do it outside. Depends on the accumulation level. -- __________________________________________________ __________ *** Post replies to newsgroup. E-mail is not accepted. *** __________________________________________________ __________ |
#10
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Jonas Dieckelmann wrote in
: Hi there. Yesterday i opened the case of my pc to do some dust removal. I used a clean brush for this purpose, whipping away dust from the motherboard. After i reinstalled what i had taken out, following Problem occured: I startet Windows, did some work and when i wanted to power off the pc (with Windows-Shut down ), the pc would power down, but imediately after the fans stop rotating the system would power on again !. So i went and disconnected every component from the motherboard but the CPU and the PSU ( eben the RAM), but the problem persisted. I used another PSU from a friend, connected it to the motherboard: still the same Problem. Has anybody a hint, why the system still wont power down ? Asus A7v333 AthlonXP 1900+ 350W PSU Jonas In the BIOS, change the APCI from S1 to S3 |
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